diff --git a/views/ngXosLib/karma.conf.js b/views/ngXosLib/karma.conf.js
index 49f72a1..36ddda1 100644
--- a/views/ngXosLib/karma.conf.js
+++ b/views/ngXosLib/karma.conf.js
@@ -16,7 +16,7 @@
   'xosHelpers/src/**/*.module.js',
   'xosHelpers/src/**/*.js',
   'xosHelpers/spec/**/*.test.js'
-  // 'xosHelpers/spec/ui/form.test.js'
+  // 'xosHelpers/spec/ui/smart-pie.test.js'
 ]);
 
 module.exports = function(config) {
diff --git a/views/ngXosLib/xosHelpers/spec/ui/smart-pie.test.js b/views/ngXosLib/xosHelpers/spec/ui/smart-pie.test.js
index a679c66..029f8d4 100644
--- a/views/ngXosLib/xosHelpers/spec/ui/smart-pie.test.js
+++ b/views/ngXosLib/xosHelpers/spec/ui/smart-pie.test.js
@@ -86,6 +86,28 @@
         expect(isolatedScope.data).toEqual(groupedData);
       });
 
+      describe('when a labelFormatter function is provided', () => {
+        beforeEach(inject(function ($compile, $rootScope){
+          scope = $rootScope.$new();
+          scope.config = {
+            resource: 'MockResource',
+            groupBy: 'category',
+            classes: 'label-formatter-test',
+            labelFormatter: (labels) => {
+              return labels.map(l => l === '1' ? 'First' : 'Second');
+            }
+          };
+          element = angular.element('<xos-smart-pie config="config"></xos-smart-pie>');
+          $compile(element)(scope);
+          scope.$digest();
+          isolatedScope = element.isolateScope().vm;
+        }));
+
+        it('should format labels', () => {
+          expect(isolatedScope.labels).toEqual(['First', 'Second'])
+        });
+      });
+
     });
   });
 })();
\ No newline at end of file
diff --git a/views/ngXosLib/xosHelpers/src/ui_components/smartComponents/smartPie/smartPie.component.js b/views/ngXosLib/xosHelpers/src/ui_components/smartComponents/smartPie/smartPie.component.js
index 0468644..e9a27f1 100644
--- a/views/ngXosLib/xosHelpers/src/ui_components/smartComponents/smartPie/smartPie.component.js
+++ b/views/ngXosLib/xosHelpers/src/ui_components/smartComponents/smartPie/smartPie.component.js
@@ -23,6 +23,11 @@
         resource: 'Users',
         groupBy: 'fieldName',
         classes: 'my-custom-class',
+        labelFormatter: (labels) => {
+          // here you can format your label,
+          // you should return an array with the same order
+          return labels;
+        }
       }
     * ```
     * @scope
@@ -43,6 +48,7 @@
       bindToController: true,
       controllerAs: 'vm',
       controller: function($injector, _){
+
         this.Resource = $injector.get(this.config.resource);
 
         const getData = () => {
@@ -58,7 +64,7 @@
             this.data = _.reduce(Object.keys(grouped), (data, group) => data.concat(grouped[group].length), []);
 
             // create labels
-            this.labels = Object.keys(grouped);
+            this.labels = angular.isFunction(this.config.labelFormatter) ? this.config.labelFormatter(Object.keys(grouped)) : Object.keys(grouped);
           });
         }